This is chapter one of an on-line NASA book, Geomorphology from Space – A General Overview of Regional Landforms. It is divided into four sections and a conclusion. The first section, The Nature of Geomorphology, starts with the definition and continues with a description of the scales involved, fundamental concepts and the role of geomorphic studies. Types of Geomorphic Analysis is the title for the second section and it includes process studies and system analysis, climate geomorphology, and structural geomorphology. In the third section, after some remarks about quantification, maps and photographs are used to augment the demonstration of the role of space technology in large scale analysis and mapping. Prior to the conclusion there is a discussion of future directions, which includes global tectonic and climatic systems, analysis of ancient landscapes, and planetary geomorphology. The conclusion is followed by four plates including photographs, maps, and text that demonstrate the techniques described.